Back to results
US 2023/0173741 A1Published application
Drawability enhancement in polymer thin films
AssigneeMeta Platforms Technologies, LLC
InventorsArman Boromand, Andrew John Ouderkirk, Sheng Ye, Christopher Yuan Ting Liao
Life of this patent
Estimating the term…
Abstract
A method includes applying a stress to a polymer thin film to stretch the polymer thin film along a first in-plane direction, and subsequently applying a stress to the polymer thin film to stretch the polymer thin film along a second in-plane direction orthogonal to the first in-plane direction to form an ultra-high modulus polymer thin film. Calendaring or hot pressing of the ultra-high modulus polymer thin film may improve its optical and/or thermal properties.
Claims20
A method comprising:
- applying a first stress to a polymer thin film to stretch the polymer thin film along a first in-plane direction;
- and
- applying a second stress to the polymer thin film to stretch the polymer thin film along a second in-plane direction orthogonal to the first in-plane direction to form an anisotropic polymer thin film having an elastic modulus along at least one in-plane direction of at least approximately 30 GPa.
A method comprising:
- forming a polymer article from an organic resin;
- applying a first stress to the polymer article to induce a first strain of at least approximately 100% along a first direction of the polymer article and a first relaxation ratio of at least approximately 0.2 with respect to a second direction of the polymer article orthogonal to the first direction;
- and
- applying a second stress to the polymer article to induce a second strain of at least approximately 600% along the second direction of the polymer article and a second relaxation ratio of at least approximately 0.2 with respect to the first direction of the polymer article to form a stretched polymer article.
1 more element
A polymer thin film comprising:
- polyethylene having an average molecular weight of at least approximately 100,000 g/mol;
- optical transmissivity within the visible spectrum of at least approximately 80%;
- bulk haze of less than approximately 5%;
- tensile strength of at least approximately 0.5 GPa;
- and
- elastic modulus of at least approximately 30 GPa.
3 more elements
Dependencies are inferred from the claim text.